236 LOASACE^. Mentzelia. 



less than half a line long. — Torr. & Gray, Fl. i. 534; Watson, Bot. King Exp. 

 113, excl. vars. M. Veatchiana, Kellogg, Proc. Calif. Acad. ii. 99, .tig. 28. 



Dry valleys and foot-hills in early spring. Southeastern California (Fort Tejon, XanUis ; Mo- 

 have Creek, Bigclow, C'nopa-), and on the eastern side of the Sierra Nevada to Oregon ; also east- 

 ward to Cokn-ado and New Mexico. The tuherculate seeds distinguish it from the next two. 



2. M. dispersa, Watson. Very similar to the last, but the leaves sinuate- 

 toothed, sometimes entire, rarely pinnatilid, the uppermost often ovate : calyx-lobes 

 a line long: capsule narrowly linear-claA^ate : seeds very often in a single row, some- 

 what cubical, more or less grooved upon the angles, very nearly smooth. — Proc. 

 Am. Acad. xi. 137. 31. albiccmlis, var. integrifoUa, Watson, Bot. King Exp. 114. 



Washington Territory and Oregon to Colorado ; Yosemite Valley {Bolandcr) ; Guadalupe 

 Island, Palmer. Apparently confined to rather higher altitudes than the last. 



3. M. micrantha, Torr. & Gray. Leafy, branched, 1 to 2i feet high : leaves 

 ovate, an inch lung or less, somewhat sinuately toothed : flowers clustered, shorter 

 than the broad floral leaves : calyx-lobes a line long ; the ovate petals a half longer : 

 outer filaments more or less dilated : capsule broadly linear, 3 to 5 lines long : seeds 

 few, irregularly angled, a line long, very nearly smooth. — Fl. i. 535, Bartonia 

 micrantha, Hook. & Arn. Bot. Beechey, 343, t. 85. 



Rarely collected. California (Z)o?<(7?as, Wallace) ; QXeax l^nke {Torrcy) ; Ojai, Peck ham. Dis- 

 tinguished from the last by its foliage and habit, and especially by its shorter broader and few- 

 seeded capsules and larger seeds. 



4. M! congesta, Torr. & Gray. Habit and foliage of M. albicanlis ; a foot 

 high : flowers clustered at the ends of the branches, conspicuously bracted with 

 broad toothed bracts, which are membranaceous at base : calyx-lobes 1 J to 2 lines 

 long : petals bright orange, 3 to 6 lines long : fllaments all flliform : capsule clavate, 

 half an inch long : seeds irregularly angled, minutely tuberculate, nearly a line 

 long. — Fl. i. 534 ; Watson, Bot. King Exp. 114. 



A rare species, on dry hillsides. Interior of Oregon {NuttalT) ; Sierra County {Lemmon) ; 

 near Austin, Nevada, JVaisun-. 



5. M. gracilenta, Torr. Sc Gray. Stems often simple, 1 to 1| feet high : leaves 

 narrowly lanceolate, pinnatilid with many narrow lobes or sometimes only coarsely 

 sinuate-toothed : flowers usually clustered at the summit : calyx-lobes 2 to 5 lines 

 long : petals obovate to oblanceolate, rounded or acutish at the apex, 4 to 8 lines 

 long : capsule linear-clavate, | to 1 inch long : seeds in 3 rows, irregularly angled, 

 very minutely tuberculate, two thirds of a line long. — Fl. i. 534. M. albicaulis, 

 var. gracilenta, Watson, Bot. King Exp, 114. 



From Los Angeles northward to the Sacramento ; also in Northwestern Nevada, Watson. Pos- 

 sibly a small form of the next species. 



G. M. Lind.le3ri, Ton*. & Gray. Slender, 1 to 3 feet high, branched : leaves 

 ovate to narrowly lanceolate, 2 or 3 inches long, pectinately pinnatilid or only 

 coarsely sinuate-toothed : flowers axillary and terminal : calyx-lobes 5 to 9 lines 

 long, lanceolate : petals obovate, abruptly acuminate, an inch long : filaments all 

 very slender: capsule linear-clavate, 12 to 15 lines long: seeds as in the last. — 

 Fl. i. 533. Bartonia aurea, Lindl. Bot. Beg. t. 3649 ; etc. 



Rarely collected ; first found by Douglas, probably in Central California, and introduced into 

 liritish gardens, and afterward by Bridges ; Corral Hollow, Brewer. It is also reported as found 

 by Bigclow on gravelly hills near the Colorado River, but this locality is somewhat uncertain. 



§ 3. Seeds luaneroiis in double rows upon the 3 broad placentae, horizontal, flattened, 

 siiborbicxdar-winged, minutely tubercidate or nearly smooth : floivers often 

 large and shoioy : calyx-limb b-cleft nearly to the base: petals 5 or 10: 

 fllaments numerous, the o^lter often more or less dilated or petal'oixl : capsule 

 broad, oblong : leaves sessile {or jMioled in No. 8), simiately toothed or pin- 

 natifid : biennials. — Bartonia, Torr. & Gray. [Bartonia, Nutt.) 



